Segment and Geographic Data (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 1,042	$ 963	$ 1,005	$ 906	$ 1,033	$ 965	$ 960	$ 879	$ 3,916	$ 3,837	$ 3,791
Property, plant and equipment	461				488				461	488	487
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,477	1,434	1,400
Property, plant and equipment	180				186				180	186	183
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,379	1,387	1,338
Property, plant and equipment	206				225				206	225	219
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									478	467	469
Property, plant and equipment	53				45				53	45	65
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									582	549	584
Property, plant and equipment	$ 22				$ 32				$ 22	$ 32	$ 20